Abstract. The Ubiquitous Web requires novel programming paradigms and distributed architectures for the support of advanced services to a multitude of user devices and profiles. In this paper we describe a Scalable Intermediary Software Infrastructure (SISI) that aims at efficiently providing content adaptation and combinations of other complex functionalities at edge servers on the WWW. SISI adopts different user profiles to achieve automatic adaptation of the content according to the capabilities of the target devices and users. We demonstrate SISI efficiency by comparing its performance against another framework for content adaptation at edge servers.